Science
Mechanism of Action
This polymer functions by creating a hydrophobic, flexible film across the stratum corneum. This molecular lattice inhibits transepidermal water loss (TEWL) and shields the skin from environmental irritants, while its large molecular weight ensures it remains on the surface rather than penetrating into the pores.
Research
Clinical Evidence
High confidence2%
Key findings
- 01 FDA-recognized efficacy as an OTC skin protectant within the 1-30% concentration range.
- 02 Clinical evaluations at 2% demonstrate significant reduction in irritation signs and improved barrier function against chemical surfactants like sodium lauryl sulfate.
Transparency
Dusting Analysis
As a functional texture enhancer and barrier protectant, Decyl Dimethicone is rarely 'dusted' at negligible levels; however, levels below 1% may not provide the full protective film-forming benefits required for clinical barrier support.
The Formula
Formulation
Stability
Exhibits exceptional chemical inertness and stability across a broad pH spectrum, making it a reliable structural component for various delivery systems.
Synergies
- Mineral UV filters
- Hydrophilic humectants
- Other siloxanes
Safety
Safety Profile
The Cosmetic Ingredient Review Expert Panel deems substituted-methicone polymers safe, citing poor skin absorption due to high molecular weight.
Your Skin
Skin Compatibility
Our Assessment
Verdict
An essential ingredient for achieving superior formula spreadability and reliable barrier protection across all skin types.
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